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Art [367]
3 years ago
14

Steve subscribed to 10 podcasts for a total of 340 minutes. He used his two favorite tags, Hobbies & Recreation and Soliloqu

ies. Each of the Hobbies and Recreation episodes lasted about 32 minutes. Each Soliloquies episode lasted 42 minutes. To how many of each tag did Steve subscribe?
Mathematics
1 answer:
Gwar [14]3 years ago
7 0
We let x and y be the number of Hobbies & Recreation and Soliloquies episodes that Steve subscribe. The system of linear equation that best represent the given above is,
                                          x + y = 10
                                         32x + 42y = 340
The values of x and y from the system are 8 and 2, respectively. Thus Steve subscribed to 8 Hobbies & Recreation and to 2 Soliloquies episodes. 
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Which expression is equivalent to 2x2 – 2x + 7?
diamong [38]

11-2x would be the answer u are looking for. Hope this helps!

4 0
3 years ago
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The bacteria in an old piece of cheese is growing at a rate that can be modeled by y = 280 • 2^x. Determine which number represe
Katyanochek1 [597]
The answer is <span>C.) 2

The general form of formula is
y = a </span><span>• r^x
y - the total number of bacteria after x period of time
a - the initial number of bacteria
r - growth rate
x - period of time

Let's compare:
</span>y =    a   • r^x
<span>y = 280 • 2^x

Since r = 2, the growth rate is C.) 2</span>
5 0
3 years ago
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Se the distributive property to remove the parentheses.<br> -(-3v-4w+1)
KIM [24]

Hii!

\leadsto\parallel\boldsymbol{Answer.}\parallel\gets

_________________________________________________________

3v+4w-1

__________________________________________________________

\leadsto\parallel\boldsymbol{Explanation.}\parallel\gets

We use the distributive property to "distribute" the minus sign.

\sf -(-3v-4w+1)=-1\cdot(-3v)+(-1)\cdot(-4w)+(-1)\cdot1}.

<em>Simplify!</em>

<em />\sf 3v+4w-1}. <em>Which is our final answer.</em>

<em></em>

<em>Hope that this helped! Best wishes.</em>

<em></em>\textsl{Reach far. Aim high. Dream big.}

\boldsymbol{-Greetings!-}

_________________________________________________________

4 0
2 years ago
Please help ASAP brainliest.
lisov135 [29]

Answer:

\left[\begin{array}{cc}2&8\\5&1\end{array}\right]

Step-by-step explanation:

The <em>transpose of a matrix </em>M^T is one where you swap the column and row index for every entry of some original matrix M. Let's go through our first matrix row by row and swap the indices to construct this new matrix. Note that entries with the same index for row and column will stay fixed. Here I'll use the notation p_{i,j} and p^T_{i,j} to refer to the entry in the i-th row and the j-th column of the matrices P and P^T respectively:

p_{1,1}=p^T_{1,1}=2\\p_{1,2}=p^T_{2,1}=5\\p_{2,1}=p^T_{1,2}=8\\p_{2,2}=p^T_{2,2}=1\\

Constructing the matrix P^T from those entries gives us

P^T=\left[\begin{array}{cc}2&8\\5&1\end{array}\right]

which is option a. from the list.

Another interesting quality of the transpose is that we can geometrically represent it as a reflection over the line traced out by all of the entries where the row and column index are equal. In this example, reflecting over the line traced from 2 to 1 gives us our transpose. For another example of this, see the attached image!

7 0
3 years ago
What percentage of 820.00 is 680.60
bixtya [17]
680.6/820 = 0.83
0.83 = 83%
3 0
3 years ago
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